<?php

class UpImages {

    var $annexFolder = "upload";
    //附件存放点，默认为：annex
    var $smallFolder = "small";
    //缩略图存放路径，注：必须是放在 $annexFolder下的子目录，默认为：smallimg
    var $markFolder = "mark";
    //水印图片存放处
    var $upFileType = "jpg gif png";
    //上传的类型，默认为：jpg gif png rar zip
    var $upFileMax = 1024;
    //上传大小限制，单位是“KB”，默认为：1024KB
    var $fontType;
    //字体
    var $maxWidth = 500;
    //图片最大宽度
    var $maxHeight = 600; //图片最大高度

    function UpImages($annexFolder, $smallFolder, $includeFolder) {
        $this->annexFolder = $annexFolder;
        $this->smallFolder = $smallFolder;
        $this->fontType = $includeFolder . "/04B_08__.TTF";
    }

    function upLoad($inputName) {
        $imageName = time(); //设定当前时间为图片名称
        if (@empty($_FILES[$inputName]["name"]))
            die("没有上传图片信息，请确认");
        $name = explode(".", $_FILES[$inputName]["name"]); //将上传前的文件以“.”分开取得文件类型
        $imgCount = count($name); //获得截取的数量
        $imgType = $name[$imgCount - 1]; //取得文件的类型
        if (strpos($this->upFileType, $imgType) === false)
            die(error("上传文件类型仅支持" . $this->upFileType . " 不支持 " . $imgType));
        $photo = $imageName . "." . $imgType; //写入数据库的文件名
        $uploadFile = $this->annexFolder . "/" . $photo; //上传后的文件名称
        $upFileok = move_uploaded_file($_FILES[$inputName]["tmp_name"], $uploadFile);
        if ($upFileok) {
            $imgSize = $_FILES[$inputName]["size"];
            $kSize = round($imgSize / 1024);
            if ($kSize > ($this->upFileMax * 1024)) {
                @unlink($uploadFile);
                die(error("上传文件超过 " . $this->upFileMax . "KB"));
            }
        } else {
            die(error("上传图片失败，请确认你的上传文件不超过 $upFileMax KB 或上传时间超时"));
        }
        return $photo;
    }

    function getInfo($photo) {
        $photo = $this->annexFolder . "/" . $photo;
        $imageInfo = getimagesize($photo);
        $imgInfo["width"] = $imageInfo[0];
        $imgInfo["height"] = $imageInfo[1];
        $imgInfo["type"] = $imageInfo[2];
        $imgInfo["name"] = basename($photo);
        return $imgInfo;
    }

    function smallImg($photo, $width=128, $height=128) {
        $imgInfo = $this->getInfo($photo);
        $photo = $this->annexFolder . "/" . $photo; //获得图片源
        $newName = substr($imgInfo["name"], 0, strrpos($imgInfo["name"],
                                ".")) . "_thumb.jpg"; //新图片名称
        if ($imgInfo["type"] == 1) {
            $img = imagecreatefromgif($photo);
        } elseif ($imgInfo["type"] == 2) {
            $img = imagecreatefromjpeg($photo);
        } elseif ($imgInfo["type"] == 3) {
            $img = imagecreatefrompng($photo);
        } else {
            $img = "";
        }
        if (empty($img))
            return False;
        $width = ($width > $imgInfo["width"]) ? $imgInfo["width"] : $width;
        $height = ($height > $imgInfo["height"]) ? $imgInfo["height"] : $height;
        $srcW = $imgInfo["width"];
        $srcH = $imgInfo["height"];
        if ($srcW * $width > $srcH * $height) {
            $height = round($srcH * $width / $srcW);
        } else {
            $width = round($srcW * $height / $srcH);
        }
        if (function_exists("imagecreatetruecolor")) {
            $newImg = imagecreatetruecolor($width, $height);
            ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo

                    ["width"], $imgInfo["height"]);
        } else {
            $newImg = imagecreate($width, $height);
            ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo

                    ["width"], $imgInfo["height"]);
        }
        if ($this->toFile) {
            if (file_exists($this->annexFolder . "/" . $this->smallFolder . "/" . $newName))
                @unlink($this->annexFolder . "/" . $this->smallFolder . "/" . $newName);
            ImageJPEG($newImg, $this->annexFolder . "/" . $this->smallFolder . "/" . $newName);
            return $this->annexFolder . "/" . $this->smallFolder . "/" . $newName;
        } else {
            ImageJPEG($newImg);
        }
        ImageDestroy($newImg);
        ImageDestroy($img);
        return $newName;
    }

    function waterMark($photo, $text) {
        $imgInfo = $this->getInfo($photo);
        $photo = $this->annexFolder . "/" . $photo;
        $newName = substr($imgInfo["name"], 0, strrpos($imgInfo["name"], ".")) .
                "_mark.jpg";
        switch ($imgInfo["type"]) {
            case 1:
                $img = imagecreatefromgif($photo);
                break;
            case 2:
                $img = imagecreatefromjpeg($photo);
                break;
            case 3:
                $img = imagecreatefrompng($photo);
                break;
            default:
                return False;
        }
        if (empty($img))
            return False;
        $width = ($this->maxWidth > $imgInfo["width"]) ? $imgInfo["width"] : $this->maxWidth;
        $height = ($this->maxHeight > $imgInfo["height"]) ? $imgInfo["height"] : $this->maxHeight;
        $srcW = $imgInfo["width"];
        $srcH = $imgInfo["height"];
        if ($srcW * $width > $srcH * $height) {
            $height = round($srcH * $width / $srcW);
        } else {
            $width = round($srcW * $height / $srcH);
        }
        if (function_exists("imagecreatetruecolor")) {
            $newImg = imagecreatetruecolor($width, $height);
            ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo

                    ["width"], $imgInfo["height"]);
        } else {
            $newImg = imagecreate($width, $height);
            ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo

                    ["width"], $imgInfo["height"]);
        }

        $white = imageColorAllocate($newImg, 255, 255, 255);
        $black = imageColorAllocate($newImg, 0, 0, 0);
        $alpha = imageColorAllocateAlpha($newImg, 230, 230, 230, 40);
        ImageFilledRectangle($newImg, 0, $height - 26, $width, $height, $alpha);
        ImageFilledRectangle($newImg, 13, $height - 20, 15, $height - 7, $black);
        ImageTTFText($newImg, 4.9, 0, 20, $height - 14, $black, $this->fontType, $text[0]);
        ImageTTFText($newImg, 4.9, 0, 20, $height - 6, $black, $this->fontType, $text[1]);
        if ($this->toFile) {
            if (file_exists($this->annexFolder . "/" . $this->markFolder . "/" . $newName))
                @unlink($this->annexFolder . "/" . $this->markFolder . "/" . $newName);
            ImageJPEG($newImg, $this->annexFolder . "/" . $this->markFolder . "/" . $newName);
            return $this->annexFolder . "/" . $this->markFolder . "/" . $newName;
        } else {
            ImageJPEG($newImg);
        }
        ImageDestroy($newImg);
        ImageDestroy($img);
        return $newName;
    }

}
?>